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Question 312775: Which of the following relations is NOT a function? (2.0 points)
A) an ascending line
B) a descending line
C) a horizontal line
D) a vertical line
2.
An example of a joint variation, with y as the dependent variable would be __?__ (2.0 points)
A) y= 2xz
B) xy = 2
C) x/y = 2
D) square root of x/y = 2
3.
Which of the following is NOT an example of an Irrational Number? (2.0 points)
A) 4.2
B) square root of 5
C) 5.212573...
D) pi
4.
The name of an algebraic property and an example are given. Which one is incorrect? (2.0 points)
A) Distributive Property -> 4(x+3)=4x+12
B) Associative Property of Addition -> 4+(2+3)=(2+3)+4
C) Inverse Property of Addition -> 4+(-4)=0
D) Commutative Property of Addition -> 4+(2+3)=4+(3+2)
5.
When solving an equation like 2x+10=2(x+5), and, when simplified, you get x=x, 10=10, or 0=0, what is the solution for x? (2.0 points)
A) no solution
B) x=any real number
C) x=10
D) x=0
6.
Which of the following would be the inequality which expresses this graph?
(2.0 points)
A) x<5
B) x>5
C) x<=5
D) x>=5
7.
Which of the following inequalities is expressed by this graph?
(2.0 points)
A) -2 < x < 4
B) -2 <= x <= 4
C) -2 > x > 4
D) -2 >= x >= 4
8.
When solving for "a" in the equation , what mathematical operation is performed? (2.0 points)
A) subtract b squared from both sides of the equation and then square both sides of the equation
B) subtract b squared from both sides of the equation and then take the square root of both sides of the equation
C) take the square root of both sides of the equation and then subtract b squared from both sides of the equation
D) square both sides of the equation and then subtract b squared from both sides of the equation
9.
The equation C=3.14d is an example of a __?__ variation where the constant of variation, 3.14, is the approximation for pi. (2.0 points)
A) Direct
B) Inverse
C) Joint
D) Combined
10.
Which of the following is the inverse function of f(x)=2x-3?
In other words, find f -1(x). (2.0 points)
A) 2y-3
B) (x-3)/2
C) (x+3)/2
D) 2(x+3)
11.
In the graph, which of the following is NOT true?
(2.0 points)
A) m = 2
B) m = -2
C) b = 5
D) descending line
12.
Which of the following is an equation of a horizontal line? (2.0 points)
A) y=4
B) x=6
C) x+y=2
D) y=2x+3
13.
What is the equation of the x axis? (2.0 points)
A) x = 0
B) y = 0
C) x + y = 0
D) There is no equation
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! Please re-post your question and be specific about the problems you are having.
Use the other posts as a guide to what is appropriate.
Include any partial work you may have completed showing where you're stuck.
Don't just list 15 questions and expect solutions.
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